报告题目：Assembly dynamics in non-equilibrium nanostructured systems
报告摘要：The spontaneous formation of complex modulated structures or spatiotemporal patterns is ubiquitous in both natural and artificial systems, and plays a key role in controlling system properties and functionality. However, a comprehensive understanding of such phenomenon is hindered by the fact that the underlying processes are usually nonequilibrium, nonlinear, can span a variety of spatial and temporal scales, and involve complex coupling between different scales and also with material growth and processing conditions. In this talk I will introduce some of such out-of-equilibrium systems that are of continuing great interest, particularly the nanostructure self-assembly in strained solids and mesophase dynamics in soft matters such as block copolymers. They can be characterized via the associated system dynamics, ranging from the relaxational feature governed by free energy minimization in near-equilibrium systems, to the least-understood nonrelaxational dynamics in systems far from equilibrium where the well-known minimization principle does not apply. Some of our recent progress on multiple-scale modeling and analysis for these seemingly separate but fundamentally related systems will be discussed.